JL Audio Gotham

Spotted in the signature of a fellow lowyat.net forumer

u going buy JL Audio Gotham ??       

huh? my cantons no good??

fortunately the submersive was ok.. at least something good

after getting this sub my pocket become peasant too

what rollsroyce & what SVS sub?

r u stoned?

Ron's Submersive curves.
(with Ron's permission)

These are preliminary frequency curves that I took yesterday. I just took some basic measurements and it was done with the RS SPL Meter coz I forgot to bring my connector for the Galaxy CM-140. Will redo and play around with the crossovers to see if I can improve on this. Also this was all with Audyssey only and based on the curves I believe Ron can run the Audyssey again with the tripod for better results (since these results were based on Audyssey mic on the chair which is not correct)

1st chart : This is at reference 75dB. Pretty decent results. Room node of 31.5Hz present. Again need to check this post Audyssey again.


2nd chart : Ron's room is pretty difficult and probably needs to be redone after Audyssey. If still not able might need an AS-EQ1 one to improve on this. His lower frequencies barely settle down at 300ms. In fact they linger around for as long as 1s. In fact  at 16Hz there is a pickup after 300ms that u cannot see. I believe I need to redo this with the Galaxy. I also believe this will improve after 2nd round of Audyssey. If this cannot be corrected, then a AS-EQ1 is necessary for further accuracy.


3rd chart: With the volume on AVR turned slightly up only, as I said, easily will hit 110dB with almost no distortion


Its a giant sub and if there is flexibility in placement I believe we could make it even better. Will post the new results once its done.

Kind of sad (IMHO) but boils down to personal preference 

Next time, (if I am loaded enough) will get 2 rooms at KLIAV show. 1st room - for the real enthusiasts in AQ. 2nd room - bass heads    Plonked in 13-Ultra in those hotel room. Set it to run hot at +3dB and crank the volume to abt 5dB shy of reference level. I bet next rooms will be feeling the tremors since it oculd hit 103dB with ease . Sure very laku one 

That I am not sure and probably yes as EQ1 able to do a proper room correction since it does not mention that the PSB comes with any EQ or room correction device. But on SPL output, I put my money on PB13-Ultra 

Try cushioning your door with those little foam pads (you can buy in Home Fix, Ace, or other hardware store). Stick it on the door frame and it might help absorb the vibrations.

Or you can turn down the sub volume